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Optical waveguide

A technology of optical waveguide and optical core, which is applied in the field of laser systems, can solve complex and expensive problems, and achieve the effects of less error, less complexity, and avoiding nonlinear effects

Pending Publication Date: 2022-02-18
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Previously known methods of beam splitting and recombining in multicore waveguides are very complex and thus expensive in practice

Method used

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Embodiment Construction

[0032] figure 1 a shows an optical waveguide according to the invention in a cross-sectional illustration. The optical waveguide has five optical cores 1a, 1b, 1c, 1d, 1e and a first cladding 2, and each optical core 1a, 1b, 1c, 1d, 1e is parallel to each other and spaced apart from each other along the The longitudinal extension (ie perpendicular to the plane of the drawing) extends continuously from one end of the optical waveguide to the other; the first cladding 2 collectively surrounds the cores 1a-1e. The cores 1b-1e are arranged in a cross shape around the central core 1a. The optical waveguide has a lower refractive index in the region where the first cladding layer 2 is formed than in the region where the cores 1a-1e are formed. In addition, a second cladding layer 3 is provided, which surrounds the first cladding layer 2 serving as a pumping cladding layer, and the optical waveguide has more lower refractive index. The matrix material of an optical waveguide conf...

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PUM

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Abstract

The invention relates to an optical waveguide comprising two or more light-guiding cores (1a-1e) which extend continuously from one end of the optical waveguide to the other along the longitudinal extent of the optical waveguide in a manner parallel to and at a distance from one another, and comprising a first cladding (2) surrounding the cores (1a-1e). The problem addressed by the invention is that of providing a multi-core optical waveguide for high-power operation with a reduced system complexity in relation to the prior art. According to the invention, this problem is solved by virtue of the cores (1a-1e) being arranged with respect to one another and spaced apart from one another in such a way that the propagation modes of the light propagating in the optical waveguide at a working wavelength couple to one another, wherein the length of the optical waveguide is chosen in such a way that the light input coupled into only a single one of the cores (1a-1e) at one end of the optical waveguide initially spreads to the other cores (1a-1e) during the propagation through the optical waveguide and, after passing through the optical waveguide, leaves the optical waveguide at the other end again from a single core (1a), with at least 60%, preferably at least 75%, of the total luminous power propagating in the optical waveguide. Moreover, the invention relates to a laser system comprising such optical waveguide, for example an optical amplifier, and to a method for guiding light in the optical waveguide.

Description

technical field [0001] The present invention relates to an optical waveguide having two or more optical guiding cores and a first cladding surrounding the cores, the optical guiding cores being parallel to each other and spaced apart from each other along the length of the optical waveguide The longitudinal extension extends continuously from one end of the optical waveguide to the other end. The invention also relates to a laser system having a laser source and an optical amplifier coupled to the laser source. The method further relates to a method for guiding light in an optical waveguide. Background technique [0002] In various embodiments, optical waveguides (often in the form of optical fibers made of quartz glass or plastic) are known from the prior art. Optical waveguides are wires used to transmit light. Known optical waveguides are dielectric waveguides composed of concentric layers. In the center is a light guiding core surrounded by a cladding having a lower ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02H01S3/067
CPCG02B6/02042H01S3/06737H01S3/06754G02B6/2821G02B6/29331G02B6/4296H01S3/094007H01S3/06733H01S3/09415G02B6/021
Inventor 塞萨尔·贾雷吉米萨延斯·林珀特安德烈亚斯·特纳曼
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV